If you believe that there should be more women in skepticism than there currently are, you need to evaluate your recruitment strategy. Women are not going to come running to your movement if you don’t explain how it will benefit them to participate. Have you thought about how helping you achieve your goals for the skeptical movement will also help women achieve their goals? Do you even know what their goals are? Have you asked the women you want to join your skeptical community what is holding them back? Did you think about and accept their answer or did you argue with them about it?
You may have what you think is a perfectly rational, science-based explanation for why women should be joining the skeptical movement in greater numbers, but if they aren’t coming then you have a problem. You. It’s your problem. If your goal is to increase the percentage of women who actively participate in skepticism, then it is your responsibility to figure out what you are going to do to achieve that goal. If your perfectly rational, science-based explanation for why women should join skepticism has not brought in women, it is not because something is wrong with the women. Something is wrong with your plan.
Women who do not join the skeptical movement are not failing to join because they are too emotional or susceptible to flawed thinking, or because their brains evolved to work a different way, or because they were raised wrong, or because they hate men. Women who do not join the skeptical movement fail to join because you haven’t convincingly demonstrated the benefits of how they stand to gain from it. They may not even know about it. To get these women into your community, you’re going to have to find out what interests them and be sympathetic to their interests and appeal to their point of view. You are the supplicant. They aren’t lucky you noticed them and want to let them into your club; you are lucky if you can convince them to work with you. They are doing you the favor. If you don’t happen to approve for some reason of what interests them and don’t feel like appealing to their point of view but yet you still want more women in skepticism, that’s too bad. They’re not going to work with you just because they they like to be helpful. Find a way to provide what they value and maybe they’ll reciprocate. They aren’t auditioning for you; you are giving them a sales pitch.
Good luck making those numbers!